Light screen



E, VON VARGYAS.

LIGHT SCREEN.

APPLICATlON FILED FEB. 14, 1920.

1,410,229. Patented Mar. 21, 1922.

2 SHEETS-SHEET 1.

E. VON VARGYAS.

LIGHT SCREEN.

APPLICATION FILED FEB. I4, 1920.

1 ,41 0,229. Patented Mar. 21, 1922.

2 SHEETS-SHEET 2.

PATENT OFFICE.

UNITED STATES EUGENE VON VABG-YAS, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR, BY

MESNE ASSIGNMENTS, TQFRAN'K W. BROWN AND ALONZO TWEEDALE, OF WASH- IN GTON, DISTRICT OF COLUMBIA.

LIGHT SCREEN.

specification of Letters Patent. Patented Mar. 21, 1922.

Application filed February 14, 1920. Serial No. 358,753.

7 '0 all whom it may concern:

Be it known that I, EUGENE VON VARGYAS, a citizen of the United States, residingat Vashington, District of Columbia, have 1nvented certain new and useful Improvements in Light Screens, of which the following is a specification.

This invention relates to dimmers for automobile headlights and has particular reference" to reducers of that type in which the direction or distribution of the light rays is confined and restricted by the use of screens before the light source.

My invention contemplates a light-source reducing screen which embodies features 1n a form wl. ch may be readily applied to any existing lamp, Without alteration of the latter.

A further major object of theinventlon is to provide a light screen which can be made from stamped sheet metal. In this connection, mention must here be made of the fact that the peculiar arrangement and construction of the vanes or panels in my invention prohibits the stamping of the device from a single disc, and that therefore it is built up of a plurality of stamped and shaped discs, which, when assembled, present the proper array of directing and restricting elements to carry out my invention.

With the above primary objects in view, and such others as may hereinafter appear, my invention will now be fully set forth and described, reference being had to the accompanying drawings, which constitute a part of this application, and in which- Figure 1 is a longitudinal vertical section taken through an automobile lamp of ordinary type and carrying my invention;

Figure 2.is a plan View of one of, the disc blanks, showing the cut-outs, which form the vanes or panels and the supporting ribs in dotted lines;

Figure 3 is a similar view of a second disc blank;

Figure 4 is a perspective view of the screen 61631118111 shaped from the blank of Figure 2, an

Figure 5 is arperspective view of the screen element shaped from the blank of Figure 3.

Refer ihg more particularly to the drawings, in'which like characters represent like parts throughout, 1 represents a typical automobile lamp in which a rim or clamp-ring 2 confines a pane 3 before the reflecting mirror 4 and protects the'light' source 5. Also, according to my invention, the rim or clamp ring 2 confines in place behind the pane 3 a plurality of disc-shaped screen elements 6 and 7.

The screen element 6 is provided with a diametral vertical rib 8 which terminates at its upper end in a blank sector 9 and at its lower end in a foot sector 10. Extending horizontally from the rib 8 near its upper end and parallel to the lower edge of the sector 9 are the ribs or chords 11 and 12 which subtend respectively the narrower opening 13 and the wider opening 1 1. Struck from the metal of the disc 6 are the vanes or ribs 16 which are carried by, the lower edges of the chords or ribs 11 and the vanes 16 which are supported by the chords or ribs 12, the vanes 16 being proportion ately wider than the vanes 15 as the openings 14 are wider than openings 13. When properly proportioned the vanes stand at the angles best illustrated in Figure 1, so that rays impinging thereon from the mirror 4 firs thrown downwardly toward the road- The vertical diametral rib 8 supports the inner ends of side ribs 17 "which incline downwardly therefrom and join the peripheral portion of the disc or plate 6, said ribs 17 constitute supports for vanes orpanels 18 which are cut from the blank disc 6 and are struck up into the angles shown in Figure 1, the vanes being carried along the lower edges of the ribs.

The blank disc 7 also'has an imperforate portion 19 and a vertical diametral rib 20 from which extend the downwardly inclined side ribs 21, at the same angle which determines the position of the ribs 17 of plate 6. Vanes or panels 22 of the same contour as the vanes 18 are carried by the upper edges of the ribs 21 and are bent with angles, as illustrated in Figure 1, which place them parallel to the vanes 18. It will be noted from Figure 1 that the vanes 18 and 22 extend inwardly toward the light source 5 and are therefore rounded at their outer ends as at 23, in Figure 2, to permit the def vice to be inserted into a lamp Without interfering with the mirror surface.

In assembling the plates 6 and 7, after they have been shaped as shown in Figures 4 and 5, the plate 7 is disposed behlnd the plate 6 with the sectors 9 and 19, the ribs 8 and 20 in contact, respectively, the lugs 24, on plate 6 serving as centering and supporting devices.

The vanes 18 of the plate 6 pro ect through the spaces in plate 7 from which the elements 22 were struck, and constitute with the latter, a series of parallel, angularly diverted light directing members whose numher and size are adequate to properly control the light in accordance with the purposes of this invention. It will be apparent that the assemblage of two or more plates permits the construction of a stamped metal light screen so that a sufficient area of struck-up light directing elements is available to accomplish the desired purposes.

Also, it will be evidentithat the angular directions of the parallel light directing elements may be varied as desired to spread the light downwardly and laterally, so that a maximum illumination of the road is accomplished, without the dangerous glare which is detrimental to the safety of pedestrians and approaching automobile drivers.

Having thus described my invention, what I claim as my invention is 1. In a head-light light controlling device, an assemblage of juxtaposed plates and a series of light-directin elements cut and bent out from the material of each plate, the members of one of said plates projecting through some of the openings of another of said plates to present the light-directing elements in series across a projected light.

2. In a head-light light controlling device, an assemblage of superposed plates and a series of light-directing elements stamped and extended from the face of each plate,

said plates interlocking to present the light-.

directing elements in a regular series across a projected light and the directing elements being of greater area than the resulting openings through the assembly of plates.

In testimony whereof I have affixed my signature.

EUGENE VON VARGYAS. 

